Hi thanks for contacting HCM... You have history of semen discharge in urine .... So you have retrograde ejaculation problem. In this case semen instead of urethra passed into bladder retrogradely .... This is as result of weak spnicter of oddi function..... Following can be cause for that ..... -tamsulosin if taking for BPH -few antihypertensive drugs -damage to autonomic nerve supply supplying to bladder -diabetic neuropathy -prostatic opetation...etc... Certain drug like imipramin and chlorphenerimine can tight sphincter but not as effective as surgery.... For yellow senen examined it to lab ... If pus cell present infection can be there . Consult surgeon with keeping my answer in mind.... Take care